DE1761861A1 - Device for format control of a printing device - Google Patents

Description

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elements relating to the receipts «a special control device. A a typical small adjustment system of this type is in the US patent 3,297,992. This system has an input / output printer with a single-element thick head, which from the left Edge AB is movable in a manner described in US patents 2 919 002 and 3 082 854 is described in more detail. The system according to the U.S. Patent 3,229? 992 allows both vertical and horizontal control of a document, for example a goods invoice » where the control groove help of vertical and horizontal * Yes, belts and the associated drive and discharge mechanisms

It
to be led. In addition, means are provided for checking the position of the printer with respect to the document and, in particular, a coordinate position which is determined by a combined display of the horizontal and vertical tape units. This system be. There is also a core memory, arithmetic circuits, a unit for processing cards coated with magnetic tracks, various "clock generators, memory access" and logic circuits that are required for the execution of an Iteehenprogrammes. However, the system does not use a stored program in the conventional sense; it can only be adapted to do so.

As already mentioned, in the case of the system according to the US patent 3 297 992 the information about the lag of the printhead

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Obtained through horizontal and vertical bandectities, which are mechanically coordinated with the dsm Abdrucianechanismu · deliver and paste, according to the printing process of the document. The tape rigidity a thermoplastic tapes use »the perforations in general

contain
Series of channelsV made with the help of. Be felt.

Other well-known systems use toothing directions for the 4-way track guide. Such devices, however, always require mechanisms of a very complex nature, which provide the printer with the exact physical location of the printing media and the documents. Other known systems * use * - ^ electoral devices- fttr the acquisition of a recording aev Drudcwagembewegu & g _e you baeltsea TabttlnUonimöglichkeiten »dl © in both». Movement of the print carriage

In general, the known systems are identified by that ate natural. Einriclitungets and / or betiäditüd the severance payment run » göa of pressure equipment. b «necessarya, in order for- the 'desired. Purposes Yei-i can stand u can.

Therefore β eats 'the task of the invention' the parts of the skin that have become known. Facilities for dief formats Expensive Ting printers to

BATH

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. For a device for the format control of a printing device, in particular for receipts, forms, letters or the like * bO0t consisting of a printer with a “step-by-step or backward moving print head” in front of the form, with a form feed “edge division and electric keyboard £ With data input and probe functions, such as tabulation, backward step or the like, also on a memory and a spoichoir access control, the invention consists in that an arithmetic "circuit is provided" whose work is done with the tear-platonic movement of the "Druddcopfae for the derivation of a numerical one Possitiottflwertee, which indicates the I ^ ge dop printhead relative to the form, is coupled in such a way that iodo position step that the printhead executes the previous poeitioneword around the Y / ert +1 or -1, depending on the direction (right or left), pre-changed and that finally for the abechnittewei · «movement dee D Nickkopfes a control circuit is provided, which the access to the stored numerical values of the Abechnittepoeitloncn (tabular word) controls »compares these values with the current position word (HPD) and generates corresponding control signals for the further operation of the device.

The device cur format control is further developed in such a way that the arithmetic circuit is based on an S register for opening

209808 / U60 _B AD ORIGINAL

si & hrn® of an ÄbahtdttapositionswertÄa {tabulator word) from the memory, from an A-register to record the current position of the print head and from an Aklaimulator consists of »many® r ά & η numeHaehfitt value of the current position at step widened ·« Switching of the print head by the value +1 or Λ changes tmsi the further b © i absdinittsweisör further switching- (Tabul &toropiH'aticm) by a control signal the value of the tabulator position with the current position value of the Drudslcopias compares and corresponding output aerae.

A further embodiment is characterized in that the Holding out a write core logic circuit, out of a write core logic control circuit, from a spesdellen adraeeen disturbance and further from a logic circuit for controlling the incrementation d «s Äldcumtilatorinhalteej aur control of the Registervergleicb.ee and the

Spetcher adreesation is open.

Hiörau »result in a number of advantages that the invention compared to the known facilities ssur has format control. The monitoring and control of the printhead position takes place in the Weekly electronics »from which» I simplify the program strips dee systems · result.

Another advantage is given by the increase in poetry

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and monitoring of the print copy · essentially with facilities which are already available in the system anyway, only minor changes need to be made.

Another advantage results from the fact that the format control is on the programming criteria of the system β is based, thus ensuring compatibility with the system and simplifying the maintenance of the Format indications and in the execution of tests and subroutines can be achieved.

It is furthermore advantageous and especially for the invention that the FunkÜonon for the position monitoring and modification, i.e. the Adaptation to the current position of the print head ce at least can be carried out just as quickly as the other computer operations.

is also an advantage, because the situation monitoring in the system of the printhead it when printing, the monitoring of spaces and backward switching, as well as forwards for tab operations and reverse direction can be performed.

In the following the invention is explained by means of drawings.

described in more detail below. £ · seigern

.20 9808/1460 _{BAD 0RiGlNAL}

Γ%. Ιί the block dial picture of an Ilcdmersyctemes «ill Kflxn-

Storage, nuclear storage addressing, Aritli: ncti5schal ~ processing, inputting, and various logical Connections necessary for the management of the situation diung dec DrucVJkopfec beztlglidi de «formco used will, |

a diagram of the timing iilr dao in Fi ^ -, 1 <largestie System,

3; 3tcueredialnmgon for checking the high-

zontn lla 0C byte 0 beattyHch given tabooJalniposlflo ·· n «n contained in memory» inl,

A \ a line diagram for the system shown in fig. 3, Λ

clno supervisory authority atif den J :: Jit * / Aungaly rather in which Syctem is used,

rig, f> i a tabulator medjauissmu »for the setting and l, tt

ediuftg the tab floppe divide the d rucher p, which is in Fig. 5 is shown and

2 O 9 8 O 8 / U 6 O

Fig. 7:

a block diagram of the computer systems for the execution of test and branch operations.

To explain the abbreviation used in the description, The following table shows the surname between the definitions used and their abbreviations hcretell «n.

Abbreviation A-Reg

HPB

definition

A register

Kpmmcnuir

Stores the HFB operand} is also used for the basic · used in arithmetic operations.

Dinar Autgang de · A-Regietere 1-Z-4-G

CD Transfer / borrower Einor the entrance or exit
ge de Accumulator Löich HPB Sets HPB to zero bu
back CR Carriage return Return de · print head β sur
Selected left margin butt
sition

Listen i zontalla QCbyte

Memory Address Rcgioter

Area in memory} stores the position of the print copy β Concerning the situation of the document

Stores the address of the next word that appears in the Memory to be addressed • oll

U 262

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BATH ORIGINAL

> A

Oil log

definition

The contents of the S-He ^ ist Is greater than the Λ -! Logiuto riiihalt

Dor fj-Ua ^ i :; gate content Lot not bigger than the A-Regiöt <srinhalt

S register

comment

Logical Odor-L * oh: iltung

Are you using yours? dßo Verglelchevor «to {j; ae doe HPB with the Tiibulvttoi'byto

V / ird \ v; their-l <lf- ;; Compare · procedure used

Saves the Oj-.eran.len dee Tab bytes} is also used with the normal arilhni sweetie Operatiuuon doe Kyßtom "v * r" turns

dos Π-RegUtera 1 - ^ - 4-8

ti address
Tl, ⁴ IV, T)

tab

T * et

"TRl

Tent 1, time 2, tent

Tabulation

Lee «1 ZaIt
I.aea I tent

ficlu-clb i tent Add 2 tent

Uitd Logical

20980BM460 Belongs to the right Lo | dlock circuit for dio Adriiäßici-iui ·; f> pi: ltller Words in memory

Impulse I ta n for TiU and TW cycles

Tabulatiiropo ration due Drucker α; Μ Tfbulatorbytü in Mpüicher

Comparison tnlt ill Fl / ur Ermlttlun /, ü t.'iji · ■ Vo it. necessary is

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to the

it; d.ui ί abul itorbyt ¹ * in the tipulche * 'r.ur (i «.k

Speldiera tla »HIM) in the return

BAD ORIGfNAL

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! 'infc hrun ^ in A & a Hy stem

The system in which the invention is incorporated consists of one Computing system which has the usual memory / memory access circuitry, arithmetic circuitry, an input / output printer, and finally an additional input circuit for entering program instructions into the memory in order to control the successive operations of the system. The invention is based on a cooking system which is described in US Pat. No. 3,297,992. Dienes system does not work with a stored program but instead uses pre-wired control panels in conjunction with matrices searching for programs and incrementing increments. Basically, however, any known programming te chnlk used for the system. The various memories, logic circuits and electronic controls are special in the 1, 3 and 7 shown. Show a suitable handle arrangement FIGS. 5 and 6.

A £> y * iem of the type described is generally used for the preparation of various types of accounting documents, such as, for example, goods invoices (factura), wage and salary accounting «!! and like used. The system receives data from various

Data sources, performs calculations with arithmetic factors and

209808 / UBO 11 262 ORIGINAL BATHROOM

supplies numeric and alphanumeric information to a printer or to other distribution frameworks to create documents that are ultimately required by the system. In general, automatic input / output is also used, as well as manual input and manual control of the system is provided.

As in the TJS patent 3? 97 99? let executed, it is for a typical Abrechmmgsanwendung, such as an invoice, desirable to provide a wide range of Programmsteuerfimktionen, in conjunction with specific areas a \ if the Formvorlnge to be created, bringing "uetandft ψλ \. A goods invoice can contain different line amounts. Most goods invoice forms also have a plate for a sub-total, which represents the addition of all individual item sums. The accounting process can calculate and print a discount amount, a tax amount, pin s return total amounts and the like This includes. Since the Kechnunffs or other forms are usually provided with the preprinted name and address of the company and with special information requested by the company, it is necessary to print the Bringing information into precise agreement with the lay-out of the formal eu. From this point of view, for a system of the type described, it is essential that the pressure for the printer always use · »elements

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remains aligned exactly according to the template, whereby it can also be changed in a suitable manner during the printing process. This now relates to the invention.

printer

The system shown in FIGS. 1, 3 and 7 includes a printer 1 which has a keyboard 3 (FIG. 5) which has data keys for printing characters on a document 4. The printing process is effected with the aid of a print head 5 for a single printing element. The keyboard also has function keys for selecting functional operations, such as space key, backspace key, carriage return key and tabulator key. In the context of this invention, a printer is used which, for data input into the system, actuates various transmission contacts which effect a coded representation of the print character or the desired function. Furthermore, various cooling-off contacts of the printer are actuated in order to transmit signals for control purposes. In the printer used in the context of the invention, these feedback contacts are designated C1 and C 2 . C 3 denotes the contacts for upper case, C4 the contacts for lower case, Cb for the tab key, space bar and backspace key and C6 the contacts for the carriage return. Of the

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BATHROOM OBIGINAL

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The printer also has contacts for carriage return and container interlocks.

The document 4 may, for example, have the columns shown in FIG and have paragraphs. In front of this document is the print head 5, which is mounted on a rocker 80, which in turn a carrier 81 for movement from left to right along the document 4 is attached. An edge stop interlock circuit 82 is provided for touching a left edge delimitation 83. A right margin 85 defines the right print margin for the Document 4. The printer 1 also has a tab rack 86 with the tab stop positions 67, 87 and 88. The tab stop position 87 is shown in the reset position, while the tab stops 67 and 88 are shown in the set position.

The keyboard 3 has a tab set / delete key 90 which is used to set and reset the stop positions on the rack 86. Details of this are shown in FIG. 6. A tab setting is made by pressing the push button 5 up to the desired Tabulator position moved and the key 90 on the Einfellseite (setting side) s is pressed. This key is a connecting lever 91 and a

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Setx / extinguishing arm 92 moves, which the rack 86 against the Rotates clockwise. If the rack 86 rotates, then moves the tab stop that corresponds to the desired position »a Lock wing 93, which the corresponding tooth clockwise rotates against the other teeth on the rack 86. With help of a A special finger on the head carrier 81 is the print head 5 his right movement stopped at the desired tabulator position. This pause takes place as long as the tab tooth is set remain.

To reset or delete a previously set tab tooth, the print head 5 is brought back to that tab position, to be deleted. Then the delete side L of the key 90 is pressed. As a result, the adjusting and extinguishing arm 92 is now so operated. that it rotates the rack 86 clockwise. The set tab tooth is now actuated by the locking wing 94 and in the Counterclockwise to its normal position of rest · reset when the button 90 is released again. After that, the tab stop stop is no longer in the path of the finger 81, so that the Print head 3 can no longer stop.

To set the left edge stop, use the stop device

209808/1 * 60 bad owg.nal

, j j- Il UZ

aiii the rewitnachto left Randpoeition pushed and then the Gfstellte Tabula tor ε top to block the line indexing cingo

F-Ie lines on document 4 «represent printed lines of information. Each duty usually ends with a single carriage return code, except for the last line of each paragraph, which is normally ends with FWel consecutive Wapenrttcklaufcodes.

Must be as stated in the verecliiedcnen ready mentioned patents, causes Hn individual Wn ° enrucklaufeode a return dee Γ> i μ el l.opfos h to the left edge and the subsequent Beat3tif clothes dec Judges;? <Ntellten Mechanismue which the Pajdcrtranspoil? Hold r for one line. Two successive carriage return codes cause the printhead to return to the left margin and a right margin of lines, so that the pnpicrtranapori ine $ f ^s 3 ^ with rwei / ^f <Hlenab9t3nd »between the absiltaien.

• her

The memory 10 (FIGS. 1, 3, 7) can be designed as a magnetic core memory, which has enough capacity for the storage "dea iiy-

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stemprogrammoe and the data has door both arithmetic operations and -A-ZAusgabeopcrationen. The memory eats word organized, wherein jcJoe word is constructed aua a .Number of bytes and byte jedee Oine number, for example 4 or 8, bitb has. Beiepielsweise may a 4-bit byte having the Bite designated 8-4-Zl that ien a numeric binary value depicting in known Vi'cioe. The information is usually written into the memory 10 by the control of the write core logic circuit 11. The information is read from the memory via the Loee amplifier circuits 12. As shown in FIG. 7, the write core logic circuit contains a saliva-AJreeeregieter 13 for normal access to the data contained in the memory.

Invention cgtimä ¹ -! contains the memory 10 a number epezieller word "bereidie that are adreeeiert using a special Adreeaeneteuerung 14th In the abbreviation already given, the horizontal space byte is also contained in the tabulator word, which has a number of individual tabulator bytes, and the term tabulator word, which also contains individual tabulator bytes. The various Speaialwürter v / ground by apeaielle conditions opüter Execute "describes dear friend, adreesiert. In connection with the illustrated partially in Figs. 1 and 3, the arithmetic circuit make eine'besondere type of PositiontiGtouerung of the print head wihrend de · plants ·. Also, the various decisions that not · are manoeuvrable and serve to control the system are on be «on-

209808 / U60
met another way. _{BATHROOM 0WQ1NAL}

The horizontal fjeby te ill j ¹ saves a binttre number, which is representative of the horizontal fa ;; "dos test head% measured from the left edge, which is determined by the setting of the" llnkßn ti andanechlaf-05 fi Ϊ is. This byte is wUhrend dc ß Druckene and the W festers "ehaltung ttbör Γ eerntellen dee print head:." O-ler ehalten during Tabulatoroparationrtn on dam-date. "

The areas of the tab word «and the backward tab wait in memory 10 each contain a number of Dytec, In a typical For example, each byte consists of 8 bits. Becomes the binary number system is used, the capacity of one byte is sufficient for counting positions from 1 to 5Π6 and the reset or zero condition eu save. For the sake of simplicity, however, FIGS. 1 and 3 only show the four bit positions labeled 8-4 -? .- l.

At the beginning of a booking eprogr amme β the necessary instructions in the memory 10 via a Kingabvorrichtung 16, which a Kart «nlfte * r or a similar facility can be instructed (Flg. 7). Simultaneously with this operation, the binary values of the desired tab positions on printer 1 are also written into the memory. “Idiots for these purposes, that's the tabulator word and the tabulator rttcl-ctellwort, logged in. These words can be used by anyone Length Be within the limits given by the system. Dl «

209808 / U60 ^BAD ° * IGlNAL

Tab stop divide on printer I ₁ such as stop positions 67, 87 and 83 are set or reset according to the stored tab positions which are written in the tab and backward tab word memory 10. The tab stops normally provided in printer 1 are used accordingly for the forward tab operation. If "backwards" tab operations are desired, additional mechanisms of known type must be provided for controlling the movement of the print head β> from right to left, i.e. in the backward direction. These mechanisms generally contain means for setting a variable left margin and are for The backward tabulator operation of the present system can therefore also be used.Therefore, the print head carrier 81 must also be provided with additional latching fingers, which enable a tabulator function in the backward direction.

To explain the operation of the device according to the invention the tab word is assumed to have individual bytes which store the tab positions in the following way: 12-29-43-57.

It is also assumed that the backward tab word is the saves the same tab positions, but in reverse! borrowed direction: S7-43-29-12.

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BATH ORIGINAL

i.) J Heche the horizontal position byte with a carriage return.

2.) Add 1 to the horizontal pe-byte HPB for each print or read?, Yklue. (The accumulator is used for this purpose, it allows subtraction in all of the reverse slides. Gill for manual, automatic operation).

3,) Correction of the horizontal tape bytes for tab operation.

(Compare the horizontal position byte with the tabulator values which are stored in the tabulator word, if one is greater than the horizontal position byte. Load Oieoee byte Jn da »ITorirontal position byte, dieeee occurs, v.cnn the mechanical movement takes place . Applies to manual or automatic operations).

4, Correction of the horizontal position byteg in the case of the backward elevator

operation. (Compare the "Horir.ontallage-Byte with the backward tabulator values, which are stored in the backward tabulator word beef until the value is 1 less let than that in the HorixontnlJaf »e-r, yte saved. Charge this bytoin daa lioriiso ^ tal-Ia no byte. This is achieved when the mechanical movement

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. ZO

finds. Applies to manual or automatic operations). 5.) A test input / output and branch instruction is only given

te

Query of the state of the horizontal position byte used.

DP
Coda 7th Test-
byte Branch·-
adrosse Dl 3 Bl

If the · Teetbyte is the same size as the · Horizontal position «Byte, then a branching to an adreaoe is carried out, which by Field Bl-Dl is specified. Otherwise, the next follow-up instruction is called.

Pas Horiaont al lane byte and its modification (MOD.HPB )

For the detailed explanations given below, reference is made to FIGS. 1 and 2 . At the beginning it is also assumed that the print head 5 is in the left margin position, which is given by the margin plate 83 in FIG. Whenever there is a carriage return, as in the logical rules, the leader «! was indicated that the horizontal position ßyte by the control of the IO

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gisehen iUeuerblockes 20 in Fig, 1 and de · Horir.ontallapo-TV / te-Lftschblockes ? Λ deleted. Regardless of what was I oultion of I> vuckkopfoe chosen for atm toads edge-byte horizontal position is set the zero position for dan, Each time the print head *> p.Oßea beaten the document 4 for the impression a "character" odor Each time it is advanced by one space, a one is added to the value of the horizontal reading C-Fiytea in the memory 10. The · »it was also stated in the Ionic Rules. Further, each time a backward step is taken, a one is subtracted from the horizontal read 0 byte. The necessary arithmetic operations for this are carried out by the S-Regieter 25, the AP.egister? 6 and the binary accumulator 1.1 . The S register 25 is also used in the tabvilator word check operations, which will be explained later in connection with FIG. 3.

The accumulator 2 7 works in the usual way. It has inputs for "wel numerical values, which in this case would be supplied by the S-register 25 and the A-wheel 26. The result which it forms at its output has a binary representation and is written back into the memory 10 via the logic circuit 11. The accumulator 27 also has inputs and outputs (C / D) for f! Bertrtt {; e and borger. WMhrnnJ the modification of the Horizontaünge-rtyteg is the transfer input of the accumulator? 7 d.ieu used to put a "ί" in dun

BA Γι

209808 / U60 ^Oftt QfNAL

Accumulator for adding the value "I" to be transferred if a Imprint or a blank step has been performed. The borrow input is used to subtract the value "1" if a step backward has been taken.

The logic firing? 0 generates suitable addition or subtraction signals and transmits them over the lines 30 and? 1 to the addition or subtraction by the accumulator 2? to effect.

The signals on lines 30 and 31 are conventional generated by the logic controller 20 and can, for example, to each Time when the programming logic controls the operation of the input / Output print rs 1 required. The signal can also be supplied when the printer 1 is operated manually. Usually the signals on lines 30 and 31 when the printer is electrical Keyboard possesses, also electrically generated, as a result of actuation of the printer. However, if the printer 1 has a · mechanical keyboard a signal can only come from different interruption contacts Cl - C ?. etc., mentioned in the "Printer" section.

The following description of a typical operation cycle of the Printer 1 and a modification of the horizontal position bytes HFB should make the principles used for this clear. The time slide

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Grarnm of FIG. L contains a line for the control of the gate circuits, which is designated by "MOD HFB". The potential on this line is always increased if a .'in je tion in the Uorii.ontallage byte HIB is required. The time control includes four larger cycles, which are designated with TIU, T / 1-, TV / 2 and TW1. Different impulses, named Tl, T.- and T3, effect the timing. To simplify matters, if only one T1 pulse is used, the pulses T1 and T3 are combined on the same line in connection with the cycle information Till, TW1. As shown earlier in the mapping table, the TiI intervals represent read intervals when data is retrieved from memory 10. The TW intervals indicate write time intervals when data is being written back into the memory 10.

At the Till-Tl time, the input A 26 is reset by the AND circuit 35, and the S register ?. $ Is then reset via the line 36 with T2-Zit. The logic control ZO switches on the HPB modification block 37, which thereupon controls the special address control 14 for retrieving the horizontal position byteo from the memory 10. At T; U-T3 time, the Le _o everetirker delivers 12 BitmueUr to the ii-Pv.egister Z ^; >, which is representative of the value in the Horinontallage-Eyte ainl. The content of the upper Z 3 is immediately

A register 7.U transferred. The control is from the AND circuit

209808 / U60
H

when the signal signals TR1 and T3 coincide. At this time, the two registers 23 and 26 (S and A) contain the horizontal position byte from memory 10. At the TFv.2-TZ time, however, the S-ilegieter 2 5 is reset and released. The binary accumulator 27 responds both to the input signals of the registers Zj and 26 as well as to tfbertrag8- / borrower- £ inganf * ßsignale. However, since the S-'legistor? 5 has been reset, the accumulator 27 only takes into account the input signals from the AR.egietor "! 6 and from the carry / borrower input. The AND circuit switches at TR2-T3 time 40 (let transfer / Eorger inputs through and depending on which of the lines 30 or 31 carries a control signal, an ¹¹ I "is added or subtracted in the horizontal position byte. The output signals of the accumulator Π are then via the Schrelb core logic U for the restoration in the memory 10 at time TW1-T3, controlled by the AND circuit 41, which is conducting, transferred. During the TWZ time interval, no modification operation is carried out for the horizontal position byte. However, a test operation is carried out for the tab word ( see Fig. 3).

Modification of the horizontal position byte during tab forward and backward operations

The principle of the invention is less expensive to use ^; 209808 / U60

BATH ORIGINAL

Mechanisms to change the working-oniallage-byte according to the real position of the print head relative to the document Λ at any time: u, yourself: 3 tab operations in the forwards or backwards direction, so that this TTy te always has the exact abOIM of the Reproduces reverse head position.

For a detailed consideration of these processes, the Ver und ο-rxTng of the horizontal position byte during the tab operations, Figs. 3 and 4 serve.

Forward tabula toron e ration

V / a'hreni the forward tabulatoratlon, the horizontal axis 0-ßyte ΗΓΒ is compared with the tabulator place values in the tabulator word. The tabulator word was previously stored in the program in the order from the lowest to the highest order, if one of the tabulator words is greater than dao IIorhontallafje-F.yte. Dana it is written in the HorlzontaHage-P.yte. Vv ^M their dor modification operations for the horizontal position hyte according to the Flg. 1 and 7. dae Horizontailaje-Ryte is changed by incrementing. In the present case, incrementation means the respective addition of the subtraction do »v / ertes" 1 "bu or of the content of the horiion-

209808 / U60

lab / J byte. In contrast to this, the toetopertion for that tab word requires according to the rig. 3 and 4 a comparison of the horizontal position bytes with different tabulator position values and a non-sequential incrementation of the horizontal position byte instead of an incrementation or decrementation by the value "1" in each case. A tabulator operation is initiated by a signal from the log control 20 to the input printer 1. WSh, while the mechanical tabulation takes place, the electronic part, which is shown in Flg. 1 is shown to modify the horizontal position fly tee in order to bring the tabulator position de · print head β 5 in the horizontal position byte to the respective new status.

The logic control? 0 also generates signals on the lines 4> and 46 in order to hold up a control circuit 47 during the write-back processes of information into the memory IO and the special address control 14. Da · 5-Regieter 2 5 and da · A-Regietor? 6 are postponed at times that are comparable to those that be. ride in connection with FIGS. 1 and 2 have been described. At the moment TTIl-T? The AND circuit 50 switches on the sense amplifier M via the O Jer circuit 51 in order to transfer the horizontal position byte from the memory rather 10 into the 3 register ZS and at the same time also into the A register 26. The S register i! 5 »u-

20S808 / US0 BAO

reset. To TFv? -T3-Zcit überträft lic T! Nä circuit "C on Cd or-Circuits β ^r l the niedrigctelligen tab value or the Tabula ·

S-torbyte or the tabulator word in Tpcicher 10 in the register 2 3.

Since the AND circuit 38 Runaway rur TIU-T3 time is a ehaltet is animal contents of S ^ egicters?. ~ Not, as before, transferred to as "A-Tcgister 26th At this time, the S-Pegieter "contains the value of the first tabulator position and the A-Reglster "(> the horizontal position T5yte. A "TaV-iTirinal on the line 54 activates the subtraction ringing of the accumulator 27 in order to eo the content * Subtract S-Regiotera from the content of the A-Rögißter. The outputs of the accumulator in connection with the Dorger output are used by the logic control ί'Ο to display two displays, which are S "> ~ A or Γ)"> Ά, as in Tig. 5 are designated to deliver. The further operations of the system then depend on which of these displays appear.

An S> -A display means that the tab word byte is not larger ala is the horizontal position byte. When storing a tab word from 17-29-4? -Γ7, for example, this would occur in a comparison the "1 *" · of the tabulator word with a horizontal position byte of "17". Therefore the system has to start with the search "de" tabulator words " continue for the next tab byte for a subsequent comparison with the. Ilorisontallage-tüyte to be able to carry out.

209808 / U60 bathroom

during the * TWZ intervals * the OR circuit 60 _h, the AND circuit 61 and the OR circuit 62 work together. in order to write back the content of the S register via its outputs Sn and the write core logic into the same jtyte position in memory 10 from where the byte Euvor has been read. The AND circuit 63 causes the horizontal position byte to be saved back to its position during the time interval TW1 and when the appropriate signal S> A is transmitted by transmitting the content of the A register 26 with the aid of the outputs An via the OR circuit 6? in memory 10.

The system is now able to initiate a further cycle by increasing the position of the tabulator word byte in memory 10 and comparing the content with the horizontal position byte in the manner previously described. The input signals TW1 and S> -A, together with the AND circuit 64, cause the special address control 14 to be switched on, so that the next tab byte is selected. During this cycle, the horizontal position record is transferred to the register. The selected tab byte is then transferred to the S register 25 for the subsequent comparison. Now it can happen that during the cycle more and more is executed, the point is reached at which an output signal S> Ά from the logic controller 20 instead of / tm s> A is supplied. This occurs, for example when the tab Bvte comparable "29 *" with the ^v Höriuontallage.Byte "IT *

209808 / U60

BATH ORIGINAL

is like. When this occurs, the signal 5: => A switches through during the TW1-Intervalleβ and the circuit 6 ". With the help of the OR circuit 60 and the subsequent Uni-circuit 61 the content of the S-Hcgistere is then again Written back via the OR circuit G1 and the write core logic 11 in those positions of the horizontal position bytes which were controlled by the special address control.

If two tab operations are required, one follows the Latest horizontal position byte as described previously for each individual tabulator operation. This is possible because the electronic part of the system is essential higher speed than the mechanical tabulator part of the printer 1. This is the modification procedure for the horizontal position byte already completed »before the mechanical phase is finished.

Pückwärts-Tabuiatoroperattpn

If a checkwart tab operation takes place in the system , the Io echo function of logic 20 in FIG. 3 is reversed with respect to the mode of operation described above. As before ' old at'

209808 / U60

game was mentioned, the Pvback tab word 'lie could contain values 57-43 -?. 9-12 in the specified loan / length in memory 10. At the beginning of a backward tabulator operation, first the "'.7 ^{11 is} read from the memory key and compared with the horizontal position byte; then the" 43 "follows, then the" 29 "and so on. This arrangement simplifies the comparison network and the operation However, the system expects an S> A condition from logic circuit 20 instead of an S Α condition as was the case with the forward tab operation The stored tabulator value is stored in the memory location for the horizontal position byte in the memory 10.

Test and denial operation

j, ■

While a counting program is running, it is often desirable to check the horizontal position of the print head 5 on the document 4 to determine whether a particular subroutine should be initiated or other action should be taken. These· is taken care of by the programmer »which test and branching operations at suitable points in the program sequence builds · Such a test can be performed automatically while a program is running, or it can be performed after completion

209808 / 1A60 bad original

a »manual writing process ·· can be carried out by the writing Pereon. The test and branching instruction allows the system to check the exact position of the print head 5, to initiate a forward or backward tabulation that is requested "or, if necessary," to enter an electronic computation subroutine.

As. As the rules of logic indicate, such an instruction has its own epesial instruction form, which is an operation code Test byte and a jump address included. At such a point in the program sequence is the test operation in the block 70 (Fig. 7) and transmitted by the logic circuit 71 with the content of the Horisontallago byte HPW, which is delivered via the sense amplifier 12 is compared.

A "not equal to * ^1" statement of the comparison circuit leads to the initiation of the fetching of a next instruction by the logic circuit 72 which controls the program sequence control block 73. A "equal to" statement by the comparison circuit 71 starts the loading of a test address from the test instruction in block 70 into the address register 13 of the memory 10, whereby the system is put in a position to interrogate this particular position in the memory 10 which is required at this time

ORIGINAL BATHROOM 209808 / U60

cur can lead to the introduction of a completely new instruction sequence, with · • pieleweiee bu a subroutine. The comparison operation should lead as follows: "Equal» smaller than or larger than ¹¹ .

209808/1460 BAD OBlGiNAL

Claims (2)

- 33 - Böblingen, ID. JuU 1968 jo-hn PATENT CLAIMS 1. Device for format control of a printing device, in particular for Beiego, forms, invoices or the like, consisting of a printer with a print head that can be moved forwards or backwards in steps or sections in front of your form, with form feed, edge division and electric keyboard for data entry and special functions, such as tabulation, backward shifting or the like, furthermore from a memory and a memory raugrlffssteuorung, characterized in that an arithmetic circuit (li>, It and 27j FIg, 1, 3) is provided, the operation of which with the translatory movement the Print head (Fig. 4) for the derivation of a numerical foeitionswertoe (HPB), which indicates the position of the print head relative to the form, is coupled in such a way that each tunnel step, which the print head extends, the previous position value by the value + 1 or -I, depending on the direction of movement (right or left), changed and that finally luv d ie movement of the print head in sections (tabulation) a control circuit (11, 14, 20, 47; Fig. 1, 3) provided, which allows access to the stored numerical values of the section «- · 209808/1460 rt.; UQ documents (type 7% 1 from ·. 2 no. Ι sentence 3 de · amendment «flee. ν. 4. 9. Τ9 * Π? BATH ORIGINAL Positions (Tab) controls, compares these values with the current Foeitionswert (HPB) and generates corresponding control signals (S > ~ A S ^ -A) for the further operation of the device. 2. Device according to claim 1, characterized in that the arithmetic circuit from an S register (2v; Fig. 1, 3) to record a section »position value (tab word) the memory, from an A register (26) for receiving the current position value (HPB) of the print head β and from a There is an accumulator, which the numerical value of the current position with step-by-step advancement of the print copy β changed by the value 4-1 or -1 and furthermore in the case of step-by-step advancement (tab operation) by means of a control signal (on line 54; Fig. 3) compares the value of the tabulator position with the current position value of the print head ο and generates corresponding output control signals. 3 »Device according to claim 1 and / or 2, characterized in that that the control circuit consists of a write core logic circuit (11; Fig. 1, 3), from a write core logic control circuit (47), au » a special address control (14) and also from a logic circuit (20) to generate the incrementation of the accumulator content, to control the register comparison (S-REG against A-REG) and memory addressing exists. 209808 / U60 ¹ ^ ⁰ original